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1) A garage that specializes in foreign cars had a small magnesium fire when a car part was ignited. The mechanic knew from his training that he should not use water but could use a dry powder like a sodium chloride based fire extinguishing powder (MET-L-X) or a graphite based (LITH-X). He knows that the CO2 extinguishing powder is not a good choice.
2) The element titanium occurs on earth as titanium (IV) oxide and is found mostly in the mineral called rutile. Rutile is abundant in beach sands in Australia and South Africa. For titanium to be useful, rutile has to be processed to obtain the basic metal form of titanium. Although the process is costly, titanium is gaining popularity as a material for various equipment due to its strength and light weight. One such application is in sports equipment.
A runner in training ran a pace test at a truck and came up with the following 1.0 mile lap times in minutes/seconds.5:54, 6:02, 6:04, 6:09, 5:48. a) What was his average pace in minutes per mile?
Compare the changes in vibrational spectra of the phen ligand which result from conversion to the quinone. What has more effect on the bonding within the phen ligand?
question a student placed 10g of mgoh2 into a flask and added 500 ml of water. the student then took 100 ml of the
While an additional mol of gas is added at constant temperature as well as volume to a flask containing 2.00 mol of gas at 25C and 1.00atm pressure, the pressure increases to 1.60 atm.
When 2.05 grams of aluminum metal are dropped in 650. mL of 6.0 M hydrochloric acid, how many liters of gas are evolved at 20°C, 1.07 atm
using henrys law calculate the molar concentration of rm o2 in the surface water of a mountain lake saturated with air
A 49.38 gram sample of a hydrate of BaI2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 45.22 grams of the anhydrous compound remained. What is the formula of the hydrate
How many total stereoisomers are possible for 4-chloro-3-hexanol? Given that opening of the epoxide ring in this reaction is stereoselective, provide the names of the only two isomeric products formed using IUPAC guidelines.
Redox and Thermodynamics 1. Sketch galvanic cells based on the following overall reactions. Show the direction of electron flow, the direction of ion movement through the salt bridge, and identify the cathode and anode.
Find out the normal boiling point in Celsius of pure acetic acid giving that the liquid has a vapor pressure of 13.9 torr at 25degree Celsius and its heat of vaporization (Δhvap) is 41.7kj/mol.
If 5.0 g of H2 are reacted with excess CO, how many grams of CH2OH are produced, based on a yield of 86%?
What is meant by the primary structure of a protein molecule? How does it differ from the secondary structure of a protein? (2) How are secondary protein structures held together? (3) Discuss the importance of the tertiary and quaternary structures o..
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